CN105988242B - Liquid crystal display having light blocking members of different sizes - Google Patents
Liquid crystal display having light blocking members of different sizes Download PDFInfo
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- CN105988242B CN105988242B CN201610157641.7A CN201610157641A CN105988242B CN 105988242 B CN105988242 B CN 105988242B CN 201610157641 A CN201610157641 A CN 201610157641A CN 105988242 B CN105988242 B CN 105988242B
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
- G02F1/1362—Active matrix addressed cells
- G02F1/136286—Wiring, e.g. gate line, drain line
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/133305—Flexible substrates, e.g. plastics, organic film
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133509—Filters, e.g. light shielding masks
- G02F1/133512—Light shielding layers, e.g. black matrix
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
- G02F1/1362—Active matrix addressed cells
- G02F1/136209—Light shielding layers, e.g. black matrix, incorporated in the active matrix substrate, e.g. structurally associated with the switching element
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- Crystallography & Structural Chemistry (AREA)
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- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Liquid Crystal (AREA)
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Abstract
A liquid crystal display having light blocking members of different sizes is provided. The liquid crystal display can improve display quality by reducing light leakage. The display includes: a first substrate; a plurality of pixels disposed on the first substrate; a plurality of signal lines disposed on the first substrate and disposed at edges of the plurality of pixels; a second substrate facing the first substrate; and a plurality of light blocking members disposed on the second substrate, overlapping the plurality of signal lines, and overlapping edges of the plurality of pixel regions, wherein a width of the light blocking member overlapping the edges of the plurality of pixel regions varies depending on positions of the plurality of pixels.
Description
Technical Field
The disclosure relates to liquid crystal displays.
Background
A Liquid Crystal Display (LCD) is one of the most widely used flat panel displays today. The LCD includes a pair of panels provided with field generating electrodes such as pixel electrodes and a common electrode, and a Liquid Crystal (LC) layer interposed between the two panels. The LCD displays images by applying voltages to the field-generating electrodes to generate an electric field in the LC layer, and the orientation of the liquid crystal molecules is changed in response to the electric field to adjust the polarization of incident light.
In order to improve the contrast of the liquid crystal display, a light blocking member is formed on an edge of each pixel region to prevent light leakage on the edge of the pixel region.
In this case, when the two substrates of the liquid crystal display are misaligned, misalignment is generated between the light blocking member and the opening region of the pixel region, thereby reducing the contrast of the liquid crystal display and generating display quality deterioration such as spots.
The above information disclosed in this background section is only for enhancement of understanding of the background of the invention and therefore it may contain information that does not form the prior art that is already known in this country to a person of ordinary skill in the art.
Disclosure of Invention
The inventive concept provides a liquid crystal display which prevents a contrast ratio from being lowered and display quality from being deteriorated such as a mottle from being generated by preventing an opening region of a pixel region from being misaligned with a light blocking member even though two substrates of the liquid crystal display are misaligned.
A liquid crystal display according to an exemplary embodiment includes: a first substrate; a plurality of pixels disposed on the first substrate; a plurality of signal lines disposed on the first substrate and disposed at edges of the plurality of pixels; a second substrate facing the first substrate; and a plurality of light blocking members disposed on the second substrate, overlapping the plurality of signal lines, and overlapping edges of the plurality of pixels. The width of the light blocking member overlapping the edge of the plurality of pixels may vary depending on the position of the plurality of pixels.
The width of the light blocking member may gradually increase and then decrease as the distance from the central portion of the liquid crystal display increases and the distance to the edge of the liquid crystal display decreases.
The liquid crystal display may be curved to have a curvature in a first direction perpendicular to a second direction parallel to an extending direction of the plurality of signal lines.
The plurality of signal lines may be at least one of gate lines and data lines.
The plurality of pixels may include: a first pixel disposed at a central portion of the liquid crystal display; a second pixel, a fourth pixel, and a sixth pixel disposed at a first side of the first pixel and arranged in a first direction; and a third pixel, a fifth pixel, and a seventh pixel disposed at a second side of the first pixel and arranged in the first direction; a second width of the light blocking member disposed at the first side of the second pixel and a third width of the light blocking member disposed at the second side of the third pixel may be greater than the first width of the light blocking member disposed adjacent to the first pixel. A fourth width of the light blocking member disposed at the first side of the fourth pixel may be wider than the second width, and a fifth width of the light blocking member disposed at the second side of the fifth pixel may be wider than the third width. A sixth width of the light blocking member disposed at the first side of the sixth pixel may be narrower than the fourth width, and a seventh width of the light blocking member disposed at the second side of the seventh pixel may be narrower than the fifth width.
The width of the opening of the first pixel between adjacent two light blocking members overlapping the first pixel may be different from the width of the openings of the second, third, fourth, fifth, sixth, and seventh pixels.
The plurality of pixels may further include: an eighth pixel disposed at an edge portion of the liquid crystal display and disposed at the first side, and a ninth pixel disposed at an edge portion of the liquid crystal display and disposed at the second side, an eighth width of the light blocking member disposed at the first side of the eighth pixel and a ninth width of the light blocking member disposed at the second side of the ninth pixel may be substantially the same as the first width of the light blocking member disposed at the edge of the first pixel.
The liquid crystal display may further include a sealant disposed at the first side of the eighth pixel and the second side of the ninth pixel.
According to the liquid crystal display according to one exemplary embodiment of the inventive concept, although misalignment is generated between two substrates of the liquid crystal display, misalignment between a light blocking member and an opening region of a pixel region may be prevented, thereby increasing contrast of the liquid crystal display and preventing display quality such as spots from being deteriorated.
Drawings
Fig. 1 is a layout view of an opening region of a pixel and a light blocking member in a liquid crystal display according to an exemplary embodiment of the inventive concept.
Fig. 2 is a sectional view of a liquid crystal display according to another exemplary embodiment of the inventive concept.
Fig. 3 and 4 are sectional views of a liquid crystal display according to an exemplary embodiment of the inventive concept.
Fig. 5 is a layout view of a conventional liquid crystal display.
Fig. 6 is a sectional view of the liquid crystal display of fig. 5 in the direction III-III.
Fig. 7 is a layout view of a conventional liquid crystal display.
Fig. 8 is a sectional view of the liquid crystal display of fig. 7 in the VI-VI direction.
Detailed Description
The inventive concept will be described more fully hereinafter with reference to the accompanying drawings, in which exemplary embodiments are shown. As those skilled in the art will appreciate, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the inventive concept.
In the drawings, the thickness of layers, films, panels, regions, etc. are exaggerated for clarity. Like reference numerals refer to like elements throughout the specification. It will be understood that when an element such as a layer, film, region, or substrate is referred to as being "on" another element, it can be directly on the other element or intervening elements may also be present. In contrast, when an element is referred to as being "directly on" another element, there are no intervening elements present.
A liquid crystal display according to an exemplary embodiment will now be described with reference to fig. 1. Fig. 1 is a layout view of an opening region of a pixel and a light blocking member in a liquid crystal display according to an exemplary embodiment. Figure 1 shows the x-y coordinates. The x-direction is also referred to herein as the "first direction" and the y-direction is also referred to herein as the "second direction".
Referring to fig. 1, the liquid crystal display according to the present exemplary embodiment includes a first pixel PX1 disposed at a center portion C of the liquid crystal display, a second pixel PX2, a third pixel PX3, a fourth pixel PX4, a fifth pixel PX5, a sixth pixel PX6, and a seventh pixel PX7 disposed at a middle portion M of both sides of the center portion C, and eighth and ninth pixels PX8 and PX9 disposed at both edge portions E of the liquid crystal display.
The first light blocking member 220a disposed on both edges of the first pixel PX1 is disposed at the central portion C of the liquid crystal display and overlaps the signal line 171. The first light blocking member 220a disposed at both sides of the first pixel PX1 has a first width Wa.
Among the second, third, fourth, fifth, sixth and seventh pixels PX2, PX3, PX4, PX5, PX6 and PX7 disposed at the middle portion M at both sides of the center portion C, the second, fourth and sixth pixels PX2, PX4 and PX6 are disposed at the left side with respect to the first pixel PX1, and the third, fifth and seventh pixels PX3, PX5 and PX7 are disposed at the right side with respect to the first pixel PX 1.
The second pixel PX2, the fourth pixel PX4, and the sixth pixel PX6 are disposed to be sequentially distant from the first pixel PX1 toward one side ("first side") of the first pixel PX1, and the third pixel PX3, the fifth pixel PX5, and the seventh pixel PX7 are disposed to be sequentially distant from the first pixel PX1 toward the other side ("second side") of the first pixel PX 1. Referring to fig. 1, "first side" is the left side and "second side" is the right side. However, this does not limit the inventive concept.
The second light blocking member 220b overlapping the signal line 171 adjacent to the second pixel PX2 and the third pixel PX3 disposed at the middle portion M has a second width Wb. The second width Wb is wider than the first width Wa by a large difference between the first expanded portions Ea (Wb-Wa). The first expansion Ea is disposed adjacent to or in an edge portion E of both sides of the liquid crystal display. Therefore, the width of the region between two adjacent light blocking members overlapping the second pixel PX2 and the third pixel PX3 is narrower than the width of the region between two adjacent light blocking members overlapping the first pixel PX1 in the direction perpendicular to the direction in which the signal line 171 extends.
The third light blocking member 220c overlapping the signal line 171 adjacent to the fourth pixel PX4 and the fifth pixel PX5 has a third width Wc. The third width Wc is wider than the first width Wa and the second width Wb. The third width Wc is wider than the first width Wa by the second expanded portion Eb. The second expansion part Eb is disposed to face the edge portions E of both sides of the liquid crystal display. Therefore, in a direction perpendicular to the direction in which the signal line 171 extends, the width of the region between two adjacent light-blocking members overlapping the fourth pixel PX4 and the fifth pixel PX5 is narrower than the width of the region between two adjacent light-blocking members overlapping the second pixel PX2 and the third pixel PX3, and narrower than the width of the region between two adjacent light-blocking members overlapping the first pixel PX 1.
The fourth light blocking member 220d overlapping the signal line 171 adjacent to the sixth pixel PX6 and the seventh pixel PX7 has a fourth width Wd. The fourth width Wd is wider than the first width Wa and narrower than the third width Wc. The fourth width Wd may be almost the same as the second width Wb. The fourth width Wd is wider than the first width Wa by the width of the third extension Ec. The third extension Ec is disposed closer to the eighth pixel PX8 than the sixth pixel PX6, closer to the ninth pixel PX9 than the seventh pixel PX7, and at least partially in the edge portion E of the liquid crystal display. Therefore, the width of the region between two adjacent light blocking members overlapping the sixth pixel PX6 and the seventh pixel PX7 is narrower than the width of the region between two adjacent light blocking members overlapping the first pixel PX1 and wider than the width of the region between two adjacent light blocking members overlapping the fourth pixel PX4 and the fifth pixel PX5, measured in the x direction perpendicular to the extending direction of the signal line 171. A width of a region between two adjacent light blocking members overlapping the sixth pixel PX6 and the seventh pixel PX7 may be the same as a width of a region between two adjacent light blocking members overlapping the second pixel PX2 and the third pixel PX 3.
The sealant 3 is disposed at outer edges of two edge portions E of the liquid crystal display, and the fifth light blocking member 220E overlapping the signal line 171 adjacent to an edge farther from the first pixel PX1 among edges of the eighth pixel PX8 and the ninth pixel PX8 disposed at the edge portions E has a fifth width We. The fifth width We may be almost the same as the first width Wa of the first light blocking member 220a overlapping the signal lines 171 disposed at both sides of the first pixel PX1 disposed at the central portion C of the liquid crystal display.
The signal line 171 may be at least one of a gate line, a data line, and a storage voltage line.
According to the liquid crystal display according to the illustrated exemplary embodiment, the first pixel PX1, the second pixel PX2, the third pixel PX3, the fourth pixel PX4, the fifth pixel PX5, the sixth pixel PX6, and the seventh pixel PX7 are respectively displayed as one single pixel. However, the first pixel PX1, the second pixel PX2, the third pixel PX3, the fourth pixel PX4, the fifth pixel PX5, the sixth pixel PX6, and the seventh pixel PX7 may include a plurality of pixels arranged in the first direction or the second direction, respectively.
Next, a liquid crystal display according to another exemplary embodiment will be described with reference to fig. 2. Fig. 2 is a cross-sectional view of a liquid crystal display according to an exemplary embodiment.
Referring to fig. 2, the liquid crystal display according to the present exemplary embodiment includes a first substrate 100 provided with a plurality of signal lines 171 and a second substrate 200 facing the first substrate 100 and provided with a light blocking member 220.
As shown in fig. 2, the liquid crystal display is curved to have a curvature in the first direction x.
Therefore, when the liquid crystal display is bent, the compressive forces applied to the first and second substrates 100 and 200 are different from each other.
According to the liquid crystal display according to the illustrated exemplary embodiment, a greater compressive force is applied to the second substrate 200 where the light blocking member 220 is disposed, as compared to the first substrate 100 where the signal lines 171 are disposed. In this case, in the central portion C of the liquid crystal display including the first pixel PX1, no misalignment is generated between the first substrate 100 and the second substrate 200. However, in the middle portion M disposed at both sides of the central portion C, misalignment may be generated between the first and second substrates 100 and 200. In addition, since the sealant 3 is disposed in the outer region adjacent to both edge portions E of the liquid crystal display, misalignment between the first and second substrates 100 and 200 is relatively less in both edge portions E of the liquid crystal display.
As described above, the first light blocking member 220a overlapping the signal lines 171 disposed on both sides of the first pixel PX1 disposed at the central portion C of the liquid crystal display has the first width Wa.
The second light blocking member 220b overlapping the signal line 171 adjacent to the edge farther from the first pixel PX1 among the edges of the second pixel PX2 and the third pixel PX3 disposed at the middle portion M has the second width Wb. The second width Wb is wider than the first width Wa. Therefore, the width of the region between two adjacent light blocking members overlapping the second pixel PX2 and the third pixel PX3 is narrower than the width of the region between two adjacent light blocking members overlapping the first pixel PX1, measured in a direction perpendicular to the direction in which the signal line 171 extends.
The third light blocking member 220c overlapping the signal line 171 adjacent to the edge far from the first pixel PX1 among the edges of the fourth pixel PX4 and the fifth pixel PX5 disposed at the sides of the second pixel PX2 and the third pixel PX3 has a third width Wc. The third width Wc is wider than the first width Wa and the second width Wb. Therefore, the width of the region between two adjacent light blocking members overlapping the fourth pixel PX4 and the fifth pixel PX5 is narrower than the width of the region between two adjacent light blocking members overlapping the second pixel PX2 and the third pixel PX3, and narrower than the width of the region between two adjacent light blocking members overlapping the first pixel PX1, as measured in the x direction perpendicular to the direction in which the signal line 171 extends.
The fourth light blocking member 220d overlapping the signal line 171 adjacent to an edge far from the first pixel PX1 among edges of the sixth pixel PX6 and the seventh pixel PX7 disposed at sides of the fourth pixel PX4 and the fifth pixel PX5 has a fourth width Wd. The fourth width Wd is wider than the first width Wa and narrower than the third width Wc. Therefore, the width of the region between two adjacent light blocking members overlapping the sixth pixel PX6 and the seventh pixel PX7 is narrower than the width of the region between two adjacent light blocking members overlapping the first pixel PX1 and wider than the width of the region between two adjacent light blocking members overlapping the fourth pixel PX4 and the fifth pixel PX5, measured in the x direction perpendicular to the extending direction of the signal line 171. A width of a region between two adjacent light blocking members overlapping the sixth pixel PX6 and the seventh pixel PX7 may be the same as a width of a region between two adjacent light blocking members overlapping the second pixel PX2 and the third pixel PX 3.
The fifth light blocking member 220E overlapping the signal line 171 adjacent to the edges of the eighth pixel PX8 and the ninth pixel PX9 disposed at the two edge portions E of the liquid crystal display has a fifth width We. The fifth width We may be almost the same as the first width Wa of the first light blocking member 220a overlapping the signal lines 171 disposed at both sides of the first pixel PX1 disposed at the central portion C of the liquid crystal display.
The signal line 171 may be at least one of a gate line, a data line, and a storage voltage line.
The width of the light blocking members 220a, 220b, 220C, 220d, 220E (collectively 220) disposed at the edge of each pixel is first widened and then narrowed as approaching the edge portion E of the liquid crystal display from the central portion C of the liquid crystal display in the first direction x. Accordingly, the light blocking member disposed at the edge of each pixel may overlap the signal line disposed at the edge of each pixel region, and the width thereof is first widened and then narrowed as approaching the edge portion E of the liquid crystal display from the central portion C of the liquid crystal display in the first direction x.
Therefore, according to the liquid crystal display according to the present exemplary embodiment, the width of the light blocking member 220 disposed at the edge of each pixel is first widened and then narrowed as approaching the edge portion E of the liquid crystal display from the central portion C of the liquid crystal display in the curvature direction in which the liquid crystal display is bent. Accordingly, although compressive forces of different intensities are applied to the first and second substrates 100 and 200 disposed at the middle portion M of the liquid crystal display, the signal line 171 disposed at the edge of each pixel region overlaps the light blocking member 220. Thus, although compressive forces of different intensities are applied between the first and second substrates 100 and 200 facing each other, light leakage near the edge of each pixel region may be reduced, thereby preventing adverse effects on the contrast of the liquid crystal display. It is also possible to reduce display quality deterioration such as the formation of light spots due to light leakage at the edges of the pixel regions.
This will be described in detail with reference to fig. 3 and 4.
Fig. 3 is a cross-sectional view of a liquid crystal display according to an exemplary embodiment. Fig. 4 is a cross-sectional view of a liquid crystal display according to an exemplary embodiment when an external force is applied to the liquid crystal display in the x-direction.
Referring to fig. 3, the liquid crystal display according to the present exemplary embodiment includes a first pixel PX1 disposed at a center portion C, a second pixel PX2, a third pixel PX3, a fourth pixel PX4, a fifth pixel PX5, a sixth pixel PX6 and a seventh pixel PX7 disposed at a middle portion M of both sides of the center portion C, and an eighth pixel PX8 and a ninth pixel PX9 disposed at both edge portions E of the liquid crystal display.
The first light blocking member 220a overlapping the signal lines 171 disposed at both edges of the first pixel PX1 disposed at the central portion C of the liquid crystal display has a first width Wa.
Among the second, third, fourth, fifth, sixth and seventh pixels PX2, PX3, PX4, PX5, PX6 and PX7 disposed at the middle portion M at both sides of the center portion C, the second, fourth and sixth pixels PX2, PX4 and PX6 are disposed at the left side with respect to the first pixel PX1, and the third, fifth and seventh pixels PX3, PX5 and PX7 are disposed at the right side with respect to the first pixel PX 1.
The second pixel PX2, the fourth pixel PX4, and the sixth pixel PX6 are disposed to be sequentially distant from the first pixel PX1, and the third pixel PX3, the fifth pixel PX5, and the seventh pixel PX7 are disposed to be sequentially distant from the first pixel PX 1.
The second light blocking member 220b overlapping the signal line 171 adjacent to the edges of the second pixel PX2 and the third pixel PX3 disposed at the middle portion M has the second width Wb. The second width Wb is wider than the first width Wa, that is, the second width Wb is wider than the first width Wa by the first expanded portion Ea. The first expansion Ea is disposed toward the edge portions E of both sides of the liquid crystal display. Therefore, in the x direction, the width of the region between two adjacent light-blocking members overlapping the second pixel PX2 and the third pixel PX3 is narrower than the width of the region between two adjacent light-blocking members overlapping the first pixel PX 1.
The third light blocking member 220c overlapping the signal line 171 adjacent to the edges of the fourth pixel PX4 and the fifth pixel PX5 disposed at the sides of the second pixel PX2 and the third pixel PX3 has a third width Wc. The third width Wc is wider than the first width Wa and the second width Wb. The third width Wc is wider than the first width Wa by the second expanded portion Eb. The second expansion part Eb is disposed to face the edge portions E of both sides of the liquid crystal display. Therefore, the width of the region between two adjacent light blocking members overlapping the fourth pixel PX4 and the fifth pixel PX5 is narrower than the width of the region between two adjacent light blocking members overlapping the second pixel PX2 and the third pixel PX3, and narrower than the width of the region between two adjacent light blocking members overlapping the first pixel PX1, as measured in the x-direction.
The fourth light blocking member 220d overlapping the signal line 171 adjacent to the edges of the sixth and seventh pixels PX6 and PX7 disposed at the sides of the fourth and fifth pixels PX4 and PX5 has a fourth width Wd. The fourth width Wd is wider than the first width Wa but narrower than the third width Wc. The fourth width Wd may be almost the same as the second width Wb. The fourth width Wd is wider than the first width Wa by the third extension Ec. The third extensions Ec are disposed toward both edge portions E of the liquid crystal display. Therefore, the width of the region between two adjacent light blocking members overlapping the sixth pixel PX6 and the seventh pixel PX7 is narrower than the width of the region between two adjacent light blocking members overlapping the first pixel PX1 and wider than the width of the region between two adjacent light blocking members overlapping the fourth pixel PX4 and the fifth pixel PX5, as measured in the x-direction. A width of a region between two adjacent light blocking members overlapping the sixth pixel PX6 and the seventh pixel PX7 may be the same as a width of a region between two adjacent light blocking members overlapping the second pixel PX2 and the third pixel PX 3.
The sealant 3 is disposed in the outer area adjacent to both edge portions E of the liquid crystal display, and the fifth light blocking member 220E overlapping the signal line 171 adjacent to the edge farther from the first pixel PX1 among the edges of the eighth pixel PX8 and the ninth pixel PX8 disposed at the edge portions E has a fifth width We. The fifth width We may be almost the same as the first width Wa of the first light blocking member 220a overlapping the signal lines 171 disposed at both sides of the first pixel PX1 disposed at the central portion C of the liquid crystal display.
Now, referring to fig. 4, it will be described that misalignment is generated between the first substrate 100 including the signal lines 171 and the second substrate 200 including the light blocking member 220 when a compressive force is applied to the second substrate 200 including the light blocking member 220 of the liquid crystal display according to an exemplary embodiment. The arrows show the direction of the applied compressive force.
If a compression force is applied to the second substrate 200 including the light blocking member 220 of the liquid crystal display according to an exemplary embodiment, the second, third and fourth light blocking members 220b, 220c and 220d overlapping the second, fourth and sixth pixels PX2, PX4 and PX6 disposed in the middle portion M and on the left side of the first pixel PX1 are pushed toward the first pixel PX 1. Similarly, the second, third and fourth light blocking members 220b, 220C and 220d, which overlap the third, fifth and seventh pixels PX3, PX5 and PX7 disposed at the right side of the first pixel PX1 in the center portion C, are pushed to the left side with respect to the first pixel PX 1. The second, third and fourth light blocking members 220b, 220c and 220d according to one exemplary embodiment have first and second expansions Ea and Eb and third expansions Ec extending to the sides of both edge portions E of the liquid crystal display, compared to the first light blocking member 220 a. Therefore, even if the second, third, and fourth light blocking members 220b, 220C, and 220d are pushed toward the central portion C of the liquid crystal display, they are likely to still overlap the signal lines 171.
Accordingly, even if compressive forces of different intensities are applied between the first and second substrates 100 and 200 disposed at the middle portion of the liquid crystal display, the signal lines 171 overlap the light blocking member 220. Thus, compressive forces of different intensities are applied between the first and second substrates 100 and 200 facing each other, it is possible to prevent light leakage in the vicinity of the signal lines 171, thereby increasing the contrast of the liquid crystal display and preventing display quality deterioration such as spots due to light leakage generated at the edges of the pixel regions.
Next, the opening region of the pixel and the light blocking member of the conventional liquid crystal display will be described with reference to fig. 5, 6, 7, and 8. Fig. 5 is a layout view of a conventional liquid crystal display, and fig. 6 is a sectional view of the liquid crystal display of fig. 5. Fig. 7 is a layout view of a conventional liquid crystal display when an external force is applied to the liquid crystal display of fig. 5, and fig. 8 is a sectional view of the liquid crystal display of fig. 7.
First, referring to fig. 5 and 6, the conventional liquid crystal display includes a first pixel PX1 disposed at a center portion C of the liquid crystal display, a second pixel PX2, a third pixel PX3, a fourth pixel PX4, and a fifth pixel PX5 disposed at a middle portion M at both sides of the center portion C. The light blocking member 220 overlapping the signal lines 171 disposed at both sides of each of the pixels PX1, PX2, PX3, PX4, and PX5 has the same width. Therefore, the width of the opening of each of the pixels PX1, PX2, PX3, PX4, and PX5 is the same.
Fig. 7 and 8 depict a case where a compressive force is applied to the second substrate 200 on which the light blocking member 220 is disposed. Misalignment is generated between the first substrate 100 on which the signal lines 171 are formed and the second substrate 200 on which the light blocking member 220 is formed. The light blocking member 220 overlapping the signal line 171 of the second pixel PX2, the third pixel PX3, the fourth pixel PX4, and the fifth pixel PX5 disposed in the middle portion M of the liquid crystal display is moved toward the first pixel PX1 disposed at the center portion C of the liquid crystal display, and the width of the light blocking member 220 is reduced to become the second width W2. Thus, when misalignment is generated between the first and second substrates 100 and 200 in the conventional liquid crystal display, the signal lines 171 adjacent to the second, third, fourth, and fifth pixels PX2, PX3, PX4, and PX5 disposed at the middle portions M at both sides of the center portion C of the liquid crystal display are not aligned with the light blocking member 220. The misalignment widths a and B increase with increasing distance from the middle portion M of the liquid crystal display. Therefore, light leakage may occur at the edge of the signal line 171 not covered by the light blocking member 220. Such light leakage lowers the contrast ratio of the liquid crystal display and causes spots to be generated at the edges of the pixel regions, both of which result in deterioration of display quality.
However, according to the liquid crystal display of one exemplary embodiment, the width of the light blocking member 220 overlapping the signal line 171 is first widened and then narrowed in the process of moving from the center portion C toward the edge portion E of the liquid crystal display. With this structure, even if compressive forces of different strengths are applied between the first and second substrates 100 and 200 of the middle portion M of the liquid crystal display, the signal lines 171 overlap the light blocking member 220. Thus, when compressive forces of different strengths are applied between the first and second substrates 100 and 200 facing each other, light leakage in the vicinity of the signal lines 171 may be prevented. As a result, the contrast of the liquid crystal display is increased, and display quality deterioration from visual artifacts such as spots in the edges of the pixel regions can be prevented.
According to the above-described liquid crystal display according to an exemplary embodiment, the central portion C of the liquid crystal display includes one first pixel PX1, but a plurality of first pixels PX1 may be disposed at the central portion C of the liquid crystal display. Further, the second pixel PX2, the third pixel PX3, the fourth pixel PX4, the fifth pixel PX5, the sixth pixel PX6, and the seventh pixel PX7, which are disposed at the middle portion M of the liquid crystal display, are respectively described as one pixel, but they may respectively include a plurality of pixels.
While the inventive concept has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the inventive concept is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.
< description of symbols >
100: first substrate 171: signal line
200: second substrate 220: light blocking member
3: and (3) a sealant C: center part
E: edge portion M: middle part
PX 1: first pixel PX 2: second pixel
PX 3: third pixel PX 4: the fourth pixel
PX 5: fifth pixel PX 6: sixth pixel
PX 7: seventh pixel PX 8: eighth pixel
PX 9: ninth pixel
Claims (5)
1. A liquid crystal display, comprising:
a first substrate;
a plurality of pixels disposed on the first substrate;
a plurality of signal lines disposed on the first substrate and disposed at edges of the plurality of pixels;
a second substrate facing the first substrate; and
a plurality of light blocking members disposed on the second substrate, overlapping the plurality of signal lines, and overlapping the edges of the plurality of pixels,
the liquid crystal display is curved to have a curvature in a first direction perpendicular to an extending direction of the plurality of signal lines,
wherein a width of the light blocking member overlapping the edge of the plurality of pixels varies depending on a position of the plurality of pixels, and
wherein the plurality of pixels includes:
a first pixel disposed at a central portion of the liquid crystal display,
a second pixel, a fourth pixel, and a sixth pixel disposed on a first side of the first pixel and arranged sequentially distant from the first pixel in the first direction, an
A third pixel, a fifth pixel, and a seventh pixel disposed at a second side of the first pixel and arranged sequentially distant from the first pixel in the first direction,
wherein a second width of the light blocking member disposed on a first side of the second pixel and a third width of the light blocking member disposed on a second side of the third pixel are greater than a first width of the light blocking member disposed adjacent to the first pixel,
a fourth width of the light blocking member disposed at a first side of the fourth pixel is wider than the second width,
a fifth width of the light blocking member disposed at a second side of the fifth pixel is wider than the third width,
a sixth width of the light blocking member disposed on a first side of the sixth pixel is narrower than the fourth width, and
a seventh width of the light blocking member disposed at a second side of the seventh pixel is narrower than the fifth width.
2. The liquid crystal display of claim 1, wherein:
the plurality of signal lines include at least one of gate lines and data lines.
3. The liquid crystal display of claim 1, wherein:
the width of the opening of the first pixel between adjacent two light blocking members overlapping the first pixel is different from the width of the openings of the second, third, fourth, fifth, sixth, and seventh pixels.
4. The liquid crystal display of claim 1, wherein:
the plurality of pixels further includes:
an eighth pixel disposed at an edge portion of the liquid crystal display and at the first side, an
A ninth pixel disposed at the edge portion of the liquid crystal display and at a second side,
wherein an eighth width of the light blocking member disposed at a first side of the eighth pixel and a ninth width of the light blocking member disposed at the second side of the ninth pixel are the same as the first width of the light blocking member disposed at the edge of the first pixel.
5. The liquid crystal display of claim 4, further comprising:
a sealant disposed on a first side of the eighth pixel and a second side of the ninth pixel.
Applications Claiming Priority (2)
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|---|---|---|---|
| KR10-2015-0037478 | 2015-03-18 | ||
| KR1020150037478A KR102354998B1 (en) | 2015-03-18 | 2015-03-18 | Liquid crystal display |
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| CN105988242A CN105988242A (en) | 2016-10-05 |
| CN105988242B true CN105988242B (en) | 2021-02-05 |
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| CN201610157641.7A Active CN105988242B (en) | 2015-03-18 | 2016-03-18 | Liquid crystal display having light blocking members of different sizes |
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| US (1) | US10409123B2 (en) |
| KR (1) | KR102354998B1 (en) |
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| KR102598261B1 (en) * | 2016-10-14 | 2023-11-03 | 삼성디스플레이 주식회사 | Display device |
| US10712605B2 (en) * | 2017-02-28 | 2020-07-14 | Sakai Display Products Corporation | Liquid crystal display device |
| CN107908038B (en) * | 2017-11-28 | 2020-04-28 | 武汉天马微电子有限公司 | Curved surface display panel and display device thereof |
| US11231610B2 (en) * | 2017-12-12 | 2022-01-25 | Ordos Yuansheng Optoelectronics Co., Ltd. | Display panel and display apparatus |
| CN109920795A (en) | 2017-12-12 | 2019-06-21 | 京东方科技集团股份有限公司 | Array substrate and its manufacturing method, display device |
| CN108375850A (en) * | 2018-02-12 | 2018-08-07 | 厦门天马微电子有限公司 | Display panel and display device |
| US11016326B2 (en) * | 2018-11-05 | 2021-05-25 | Sharp Kabushiki Kaisha | Curved display panel and method of producing the same |
| US11237425B2 (en) * | 2018-12-19 | 2022-02-01 | Wuhan China Star Optoelectronics Technology Co., Ltd. | Display panel and display device |
| US11385488B2 (en) * | 2020-06-22 | 2022-07-12 | Sharp Kabushiki Kaisha | Curved display panel |
| CN114326191B (en) * | 2021-12-30 | 2023-08-22 | 武汉华星光电技术有限公司 | Curved surface display panel and curved surface display device |
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| CN103189786A (en) * | 2010-11-09 | 2013-07-03 | 夏普株式会社 | Liquid-crystal display panel |
| CN104007575A (en) * | 2014-06-18 | 2014-08-27 | 深圳市华星光电技术有限公司 | Black matrix unequal-width color filter base plate and liquid crystal displayer |
| CN104391410A (en) * | 2014-10-01 | 2015-03-04 | 友达光电股份有限公司 | curved surface display panel |
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| US5899552A (en) * | 1993-11-11 | 1999-05-04 | Enplas Corporation | Surface light source device |
| JP2007333818A (en) | 2006-06-12 | 2007-12-27 | Sharp Corp | Display panel |
| US20090122223A1 (en) * | 2006-07-18 | 2009-05-14 | Sharp Kabushiki Kaisha | Liquid crystal display panel |
| JP5322427B2 (en) * | 2007-12-19 | 2013-10-23 | 三菱電機株式会社 | Liquid crystal display |
| JP5159385B2 (en) | 2008-03-21 | 2013-03-06 | 三菱電機株式会社 | Liquid crystal display |
| KR101319543B1 (en) | 2012-05-17 | 2013-10-21 | 삼성디스플레이 주식회사 | Curved dispaly apparatus and multi display apparatus including the same |
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| CN103189786A (en) * | 2010-11-09 | 2013-07-03 | 夏普株式会社 | Liquid-crystal display panel |
| CN104007575A (en) * | 2014-06-18 | 2014-08-27 | 深圳市华星光电技术有限公司 | Black matrix unequal-width color filter base plate and liquid crystal displayer |
| CN104391410A (en) * | 2014-10-01 | 2015-03-04 | 友达光电股份有限公司 | curved surface display panel |
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| CN105988242A (en) | 2016-10-05 |
| US20160274420A1 (en) | 2016-09-22 |
| US10409123B2 (en) | 2019-09-10 |
| KR102354998B1 (en) | 2022-01-24 |
| KR20160113362A (en) | 2016-09-29 |
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